Mattress Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.Anti-spam check. Do not fill this in! ===Foam mattress=== All-foam mattresses use different weights and densities of petrochemical-based flexible polyurethane foams<ref>[http://www.polyurethane.org/s_api/sec.asp?CID=1649&DID=6230 "Flexible Polyurethane Foams (FPFs) Used in Upholstered Furniture and Bedding"]. {{webarchive|url=https://web.archive.org/web/20110906005320/http://www.polyurethane.org/s_api/sec.asp?CID=1649&DID=6230 |date=2011-09-06 }} American Chemistry Council: Center for the Polyurethanes Industry. 2008. Retrieved Aug. 15, 2011.</ref> and viscoelastic foams or memory foam, and [[latex rubber]] foams. A number of mattress manufacturers have incorporated polyurethane and visco-elastic foams with a portion of plant-based content.<ref>"[http://bedtimesmagazine.com/2010/02/green-foams-grabbing-the-spotlight/ Product Watch: Green foams grabbing the spotlight]". [http://bedtimesmagazine.com ''BedTimes Magazine'']. Feb. 2010. Retrieved Aug. 15, 2011.</ref> All-foam mattresses are often paired with [[platform bed|platform base]]s. ; Latex foam: Latex foam in mattresses is generally a blend of the latex of the ''[[Hevea brasiliensis]]'' tree and synthetic latex, which is derived from petrochemicals and other substances and fillers. There are, however, natural latex mattresses that leave out polyurethane-based chemicals. Latex foam is produced using either the [[Talalay Process|Talalay]] or the [[Dunlop Rubber|Dunlop]] process.<ref>"The future of foam: An ever-widening sphere of influence. [http://bedtimesmagazine.com ''BedTimes" Magazine'']. February 2003. Retrieved Aug. 15, 2011.</ref> ; Memory foam: [[Memory foam]] mattresses use conforming viscoelastic foam over firmer polyurethane base foam. Some innerspring mattresses have memory foam in their upholstery layer. Different feels and comfort levels are achieved by varying the thickness, weight and formulation of the viscoelastic foams and the base foams. Latex and memory foam mattresses each provide a unique feel. This type of mattress is good at relieving pressure on painful joints. Many memory foam mattresses are more expensive than standard spring mattresses. Memory foam is affected by temperature. In a cool bedroom, a memory foam mattress will feel firmer than it does in a warm bedroom. Memory softens and conforms to the sleeper in response to body temperature and body weight. Traditional memory foam molds to the body creating a depression the sleeper must roll out of when changing sleep positions. Mattress manufacturers have responded to this issue by using "faster response" memory foams. They spring back more quickly when the sleeper moves. Foam mattresses are also known to generally "sleep warmer" than innerspring mattresses. Mattress makers have addressed the issue with "open-cell" memory foams, pinhole cored memory foam, gel-infused memory foams, channel-cut foam cores, reticulated foam support layers and other technologies to improve air circulation through all-foam beds.<ref>Nelles, Barbara. [http://bedtimesmagazine.com/2011/08/trends-in-springs-foams-the-core-components/ "Trends in Springs and Foam"]. [http://bedtimesmagazine.com/ BedTimes Magazine], Aug. 2011. Retrieved 2013-8-13</ref>{{See also|Memory foam#Properties (of mattresses only)}} ; High density foam: Similar to memory foam mattresses, a high density foam mattress uses a more compact foam typically made from [[polyurethane]]. This kind of foam is made largely from open cells that are packed together tightly.<ref>{{cite web|title=What is High Density Foam|url=http://www.wisegeek.com/what-is-high-density-foam.htm|website=Wise Geek}}</ref> High density foam mattresses offer comfort and longevity because they are more dense than a traditional foam mattress. High density foam mattresses that have an innerspring system last even longer and eliminate mattress sagging. Summary: Please note that all contributions to Christianpedia may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here. You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see Christianpedia:Copyrights for details). Do not submit copyrighted work without permission! Cancel Editing help (opens in new window) Discuss this page